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package main
import (
"crypto/hmac"
"encoding/hex"
"fmt"
"hash"
"strings"
"gitee.com/gogm/gmsm/sm3"
)
func HashSM3(data []byte) []byte {
hasher := sm3.New()
hasher.Write(data)
sum := hasher.Sum(nil)
return sum //hex.EncodeToString(sum)
}
func pHash(result, secret, seed []byte, hash func() hash.Hash) {
h := hmac.New(hash, secret)
h.Write(seed)
a := h.Sum(nil)
j := 0
for j < len(result) {
h.Reset()
h.Write(a)
h.Write(seed)
b := h.Sum(nil)
todo := len(b)
if j+todo > len(result) {
todo = len(result) - j
}
copy(result[j:j+todo], b)
j += todo
h.Reset()
h.Write(a)
a = h.Sum(nil)
}
}
func MasterPRF(masterkey, finished_label, sm3Hash []byte) string {
result := make([]byte, 48) //finished计算的校验位只有12个字节
seed := make([]byte, 0)
seed = append(seed, finished_label...)
seed = append(seed, sm3Hash...)
pHash(result, masterkey, seed, sm3.New)
fmt.Println("result out->", hex.EncodeToString(result))
return hex.EncodeToString(result)
}
func MasterSecret() {
masterKeyHex := "C0FD5FC6695990D23892D56590AB7CFA9B692CA6A27C801C42D85BA297666ADEA93211385C3E9C30B9A30E4C8BBA66C3"
pre_mastekeyhex := "01017a57183fe024794f9909061b73d2bf8bd600b0abc0d6dc6e4e11202ffe3a75b708af9488b89235161c3ef8381ad3"
pre_masterkey, _ := hex.DecodeString(pre_mastekeyhex)
finished_label := "master secret"
randow := Random()
fmt.Println("randow->", hex.EncodeToString(randow))
prf_out := MasterPRF(pre_masterkey, []byte(finished_label), randow)
fmt.Println("PRF Out->", prf_out)
if masterKeyHex == strings.ToUpper(prf_out) {
fmt.Println("verify data Ok!!!")
} else {
fmt.Println("verify data False!!!")
}
}
func main() {
MasterSecret()
}
func Random() []byte {
ClientRandom := `403cc1b00baab1e6e5c060281a2f9f2f90ed750c709ca1f1fdeafde6247fea4d`
ServerRandom := `07dff5f4a9c898f1e83de6f1b0fd5722e4e77cae0985e568275963f9bc1fb732`
random := ClientRandom + ServerRandom
random = strings.ReplaceAll(random, " ", "")
random = strings.ReplaceAll(random, "\r", "")
random = strings.ReplaceAll(random, "\n", "")
fmt.Println("Random->\n", random)
hexdata, err := hex.DecodeString(random)
if err != nil {
fmt.Println("DecodeString Err->", err)
return nil
}
return hexdata
}
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